简介：Thecopolymersofchloroethylmethacrylate(CMA),glycidylmethacry-late(GMA),andmethylmethacrylate(MMA)weresynthesizedinbenzenesolution.Theirbreadthsofthemolecularweightdistributionsare2.1and2.3,respectivelyThether-malstabilityofP(GMA-CMA)issuperiortothatofP(CMA-MMA).TheresolutionsofP(CMA-MMA)andP(GMA-CMA)photoresistswerefoundtobe0.1～0.16μmand0.17～0.2μm,respectively.

简介：Aseriesof1-naphthylmethylmethacrylate（NMMA）-methylmethacrylate（MMA）copolymersweresynthesizedonfreeradicalmechanism.ThereactivityratiosofNMMA（r1）andMMA（r2）werereportedtobe0.83and0.89,respectively.ThecharacterizationofthecopolymersbyusingIR,NMR,GPC,UVandfiuorescencespectrometrywasdescribedinthispaper.

简介：因为他们的优异光同质，和高透明性，聚合物在抽和放射激光的范围是为激光染料的一种吸引人的主人。共聚物通常有更高的损坏阀值和更好的相片稳定性比单音聚合物。稳固的染料样品与1-基于有2-hydroxypropylmethacrylate(HPMA)的甲基methacrylate(MMA)的共聚物做了，3-，5-，7-，8-pentamethyl-2，6-diethylpyrromethene-BF2(PM567)被准备。系列和样品的放射激光的性质被学习。基于垄断merpolymethyl比作样品methacrylate(PMMA)，提高的斜坡效率和相片稳定性在共聚物被获得。最高的斜坡效率是45.1%，并且相片稳定性的将近单一的增加被获得。4390抽的脉搏的最长有用的一生以10Hz的重复率每脉搏象183mJ一样高与泵精力被介绍。结果显示稳固的染料媒介的激光表演能极大地作为主机与HPMA用MMA的共聚物被增加。

简介：Thesemibatchemulsifier-freeemulsioncopolymerizationofmethylmethacrylate(MMA)andbutylacrylate(BA)inthepresenceof2-hydroxyethylmethacrylate(HEMA)initiatedbyK2S2O8(PSP)wasstudied.Thelatexparticlescanmaintainanappreciablestabilityduringtheemulsifier-freeemulsioncopolymerizationofMMAandBAinthepresenceofHEMA.Theaverageparticlediameterincreasewithanincreaseoftotalsolidscontent,HEMAcontent,PSPcontent,ionicstrengthofthesystemandmonomerfeedrate,anddecreasewiththemonomerfeedrationfrom3/1(MMA/BA:molarration).to1/3.ThestabilityofthisreactionsystemisimprovedbyaddingHEMAasnonioniccomonomer,Highsolidscontent(50%)latexwithmonodisperseparticlecanbeobtainedusingthisprocess.

简介：由于短链perfluoroalkyl组的非结晶的性质，使用短链perfluoroalkyl稳定免费精力聚合物是的低表面一项挑战性的任务。在这研究，我们poly准备一系列随机的共聚物(perfluorohexylethylmethacrylate)-co-poly(stearylacrylate)(P13FMA-co-PSA)并且poly堵住共聚物(perfluorohexylethylmethacrylate)-b-poly(stearylacrylate)(P13FMA-b-PSA)，并且系统地在表面上调查顺序结构的效果和氟化的共聚物的13FMA的内容免费精力和表面重组。静态/动态的接触角度角度测定法和水/油抵抗性分析证明随机的聚合物P13FMA-co-PSA不能完成低表面免费精力和低表面重组同时。相反为块共聚物P13FMA-b-PSA，两低表面免费精力和低表面重组同时被获得。X光检查光电子光谱学(XPS)的结果，动态接触角度角度测定法和微分扫描热量测定(DSC)揭示上述性质。当连续SA链提高SA片断的crystallinity时，连续13FMA片断改进表面氟的符号密度，并且进一步妨碍perfluoroalkyl组的表面重组。因此，P13FMA-b-PSA比P13FMA-co-PSA展出氟的符号原子和更好结构的稳定性的更高的利用效率。

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简介：Thekineticsofsuspendedemulsionpolymerizationofmethylmethacrylate(MMA),inwhichwateractedasthedispersedphaseandthemixtureofMMAandcyclohexaneasthecontinuousphase,wasinvestigated.Itshowedthattheinitialpolymerizationrate(Rp0)andsteady-statepolymerizationrate(Rp)wereproportionaltothemassratiobetweenwaterandoilphase,andincreasedasthepolymerizationtemperature,thepotassiumpersulphateconcentration([I])andtheTween20emulsifierconcentration([S])increased.Therelationshipsbetweenthepolymerizationrateand[I]and[S]wereobtainedasfollows:Rp0∝[I]0.73[S]0.32andRp∝[I]0.71[S]0.23.TheaboveexponentswereclosetothoseobtainedfromnormalMMAemulsionpolymerization.Italsoshowedthattheaveragemolecularweightoftheresultingpoly(methylmethacrylate)decreasedasthepolymerizationtemperature,[I]and[S]increased.Thus,MMAsuspendedemulsionpolymerizationcouldbeconsideredasacombinationofmanyminiatureemulsionpolymerizationsproceedinginwaterdropsandobeyedtheclassicalkineticsofMMAemulsionpolymerization.

简介：ThispaperintroducedthesynthesisandpropertiesofIERbasedon2-hydroxyethylmethacrylate.ThederivativescontainingDEAE-,CM-,SO3Hgroupswerepreparedandtheirusesinbiochemistrywerestudies.

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简介：Thestereoregularpolymerizationofmethylmethacrylate(MMA)havebeeninvestigatedwithchiralanioniccomplexinitiator[FILi-(-)SP]intoluene,THFandtoluene/THF[1/1(v/v)].ThetacticitiesofPMMAsobtainedinthethreesolventshavebeenfoundtobemainlyasyndiotactictriads(s-PMMA)withcontentof72.3,67.7and71.4%,respectively.

简介：Tappingmodeatomicforcemicroscopehasbeenappliedtoobservesingle-chainPMMAparticleswhichwerestoredforsixmonthsatroomtemperatureaftersprayedfromverydilutesolutionsingoodsolvents,good/poormixedsolvents,andathetasolvent.Monodis-persePMMAstandardsofmolecularweightsrangingfrom7.90×10~4to1.3×10~6wereusedtoinvestigatetheeffectofmolecularweightohthesizeofthesingle-chainPMMAparticles.Thesesingle-chainparticlesshowedclosetosphericalshapes.Themorphologyofsingle-chainPMMAparticlesofagivenmolecularweightwasfoundtobeidenticalinspiteofdifferentsolventsusedforsolutionspraying.Molecularweighdependenceoftheparticledimensionwasalsofound.Thediametersofsingle-chainPMMAparticlesaftercorrectionoftlp-geometryeffectwerecomparedtothevaluesestimatedfrommolecularweightanddensity.

简介：Alkali-solubleassociativelatexthickenersmodifiedwithhydrophobiclongchainalkylgroupswerepreparedusingcommonacrylicsandvaryingamountofafunctionalmonomer,ethoxylatedbehenylmethacrylate(BEM),throughemulsionpolymerization.ItwasfoundthatthesizeoftheemulsionparticlebecamelargerwithadditionofBEM.ThelighttransmittanceofthethickenerlatexsharplyincreasedwithpHvariedfrom6to7.Theassociativelatexthickenermanifestedahigherviscositywhensolidsinthelatexthickenerswerekeptat0.5wt%orhigher,andtheoptimalamountofBEMwasfoundtobearound2.5wt%,or0.16mol%.AllthickenerlatexesmodifiedwithBEMhavebettershearingresistancethantheBEM-freethickener.

简介：Investigationsareperformedtoexplorehigh-repetition-ratefemtosecondlaserablationeffectsonthephysicalandchemicalpropertiesofpoly(methylmethacrylate)(PMMA).Ascanningelectronmicroscopy(SEM)isusedtocharacterizethemorphologychangeinthelaser-ablatedregions.TheinfraredandRamanspectroscopyrevealsthatthefundamentalstructureofthePMMAisalteredafterlaserablation.Wedemonstratethecumulativeheatingismuchgreaterduringhigh-repetition-ratefemtosecondlaserablation,supportingaphotothermaldepolymerizationmechanismduringtheablationprocess.

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简介：Diblockcopolymerscontainingpolystyrene(PSt)andpolybutylmethacrylate(PBMA)segmentsandrandomcopolymerofstyrene(St)andbutylmethacrylate(BMA)havebeenpreparedbyatomtransferradicalpolymerization(ATRP).DiblockcopolymersofBMAandStwithpredeterminedmolecularweight(1×10^4-6.5×10^4)andnarrowermolecularweightdistribution(1.25-1.5)wereobtained.Therandomcopolymercompositionsweredeterminedby^1HNMRspectroscopyandthereactivityratioswereevaluatedbytheextendedKelen-TudosmethodtobeYSt=0.91,YBMA=0.32.

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简介：我们为把坚持、有效的抗菌剂性质合并到广泛地使用的聚合物报导灵巧的策略，poly(甲基methacrylate)(PMMA)，由异分子聚合有2-(tert-butylamino)的甲基methacrylate(MMA)在经由原子转移基聚合(ATRP)的一个壶的乙醇methacrylate(TA)。随后自己组装结果poly(甲基methacrylate)-block-poly[(2-tert-butylamino)ethylmethacrylate](PMMA20-b-PTA15)diblock共聚物负担得起明确的水可分散的泡，它能轻易地为有效抑制在医院里在墙上被喷洒并且细菌杀死。1H-NMR和胶化浸透层析(GPC)研究证实了良好共聚物的成功的合成。传播电子显微镜学(TEM)，原子力量显微镜学(AFM)和散布的动态光(DLS)学习与狭窄的尺寸分发证明了泡的形成。DLS研究在各种各样的温度揭示了泡的优秀稳定性。抗菌剂测试对克积极、克否定的细菌显示出聚合物泡的有效抗菌剂活动。而且，这策略可以为在许多领域里为灵巧的抗菌剂应用准备大量聚合材料被扩大。

简介：Muchattentionhasbeenpaidtothedevelopmentofnewpolymerelectrolytewithspecialmorphology,soastoimprovetheirelectrochemicalpropertiestomeettheneedsoflithium(ion)battery.Inthiswork,PEMlatexwassynthesizedbyemulsion-fi-eepolymerization.ThemicrophotoofPEMlate...

简介：Poly(ethyleneglycolmonomethylether)methacrylate(PEGMM)wassynthesizedbymeansofthereactionofmethacrylylchloridewithsodiummonomethylpolyethyleneglycoxideandwascharacterizedbyFTIR,~1H-NMR,andultravioletspectrometries.Aseriesofpoly(vinylalcohol)-graft-PEGMM(PVA-g-PEGMM)andmethylmethacrylate-PEGMMcopolymer(PMMA-PEGMM)werepreparedandtestedforantithrombogenicityinvitro.TheresultsindicatethattheantithrombogenicityofthecopolymersbasicallyincreaseswiththeincreasingoftheDPofpolyoxyethylene(POE)chainandtendstoaplateauaftertheDParound114,i.e.thelongchainstructureofPOEisfavourabletotheantithrombogenicityofitscopolymers;moreover,theextentoftheimprovementofantithrombogenicityalsorelatestothePEGMMcontentofthecopolymersandthekindofthematrixthatthePOEchainsarelocatedon.Theseresultsareconsistentwiththeanticipationofthehypothesisofmaintainingproteinsnormalconformationsforbloodcompatiblebioraaterials.